This brief asks how often a task marked complete reopens under a documented event rule and which reason classes recur. The outcome depends on a visible event rule, not on a reviewer's impression after seeing the records.
The public sources below support traceable records, controlled access, documentation, and reviewable evidence. Applying those principles to month-end close task reopen rates is OffshoreBookkeepers.com analysis. The cited organizations do not report or endorse the proposed measure.